# Algebra 1 - 4th Edition

## Chapter 3: Inequalities

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### 3.1 Inequalities and the Number Line

http://www.sparknotes.com/math/algebra1/inequalities/section4.rhtml
This page contains notes on how to graph inequalities on a number line.

http://openhighschoolcourses.org/mod/book/view.php?id=289&chapterid=684
A lesson that covers graphing inequalities on a number line.

### 3.2 The Addition Property of Inequality

http://www.icoachmath.com/math_dictionary/addition_property_of_equality_and_inequality.html
This page explains the addition property of equality and inequality, with examples.

### 3.3 The Multiplication Property of Inequality

http://www.icoachmath.com/math_dictionary/multiplicative_property.html
This page explains the multiplication property of equality and inequality, with examples.

### 3.4 Solving Compound Inequalities

http://www.coolmath.com/algebra/07-solving-inequalities/06-compound-inequalities-01.htm
This site includes a couple pages that demonstrate solving compound inequalities, and checking the result.

http://www.mathplanet.com/education/algebra-1/linear-inequalitites/solving-compound-inequalities
This site defines and demonstrates (with a video) the steps to solve and graph compound inequalities.

### 3.5 Solving Absolute Value Inequalities

http://www.sosmath.com/algebra/inequalities/ineq03/ineq03.html
This site shows how to graph absolute value inequalities.

http://www.algebralab.org/lessons/lesson.aspx?file=Algebra_AbsoluteValueInequalities.xml
This page has notes on how to solve absolute value inequalities.